CN113726873A - Block chain-based file processing method, system, device and storage medium - Google Patents
Block chain-based file processing method, system, device and storage medium Download PDFInfo
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- CN113726873A CN113726873A CN202110996976.9A CN202110996976A CN113726873A CN 113726873 A CN113726873 A CN 113726873A CN 202110996976 A CN202110996976 A CN 202110996976A CN 113726873 A CN113726873 A CN 113726873A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/14—Details of searching files based on file metadata
- G06F16/148—File search processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees
Abstract
The invention relates to the technical field of content distribution networks, and provides a file processing method, a system, equipment and a storage medium based on a block chain, wherein the method comprises the following steps: obtaining block chain link point information to construct an adjacency list; acquiring a query request, and searching a target file in a block link point by combining the query request and an adjacency list; judging whether the target file is stored in a single block chain node or not, and if so, returning first storage information of the target file; downloading according to the first storage information to obtain a target file; or judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; downloading according to the second storage information to obtain a target file; the method can effectively reduce the occupation of computing resources to improve the feedback speed of the target file, has higher processing efficiency and higher utilization rate of storage space resources and network channel resources, and can be widely applied to the technical field of content distribution networks.
Description
Technical Field
The present invention relates to the field of content distribution network technologies, and in particular, to a method, a system, a device, and a storage medium for processing a file based on a block chain.
Background
A Content Delivery Network (CDN) is an intelligent virtual Network built on the basis of the existing Network, and a user can obtain required Content nearby by using functional modules of load balancing, Content Delivery, scheduling and the like of a central platform by means of edge servers or device nodes deployed in different regions, so that Network congestion is reduced, and the access response speed of the user is increased. The CDN-based or blockchain-based data file delivery scheme or the distributed architecture inherently can improve response speed and avoid network congestion, but the following drawbacks still exist in the existing related art schemes: firstly, the problem of resource excessive redundancy exists in the existing data file distribution scheme or distributed architecture based on a CDN or a block chain, and by backing up files and storing resource copies in each edge device in a distributed manner, excessive waste of storage space is easily caused, and the target file download speed is slow; secondly, the response speed of resource access or the downloading speed still needs to be improved, and the response speed of accessing or downloading the resource is slow due to the reasons that the communication protocol is not uniform, the access mode between the nodes is complicated and the like.
Disclosure of Invention
The embodiments of the present invention mainly aim to provide a file processing method based on a block chain, which has a higher storage space resource utilization rate and a faster response speed, and a system, a device and a corresponding storage medium capable of implementing the method.
In order to achieve the foregoing object, an embodiment of the present invention provides a block chain-based file processing method, where the method includes the following steps:
acquiring block chain link point information, and constructing and acquiring an adjacency list according to the block chain link point information;
acquiring a query request, and searching a target file in a block link point by combining the query request and the adjacency list;
judging whether the target file is stored in a single block chain node or not, if so, returning first storage information of the target file; downloading to obtain the target file according to the first storage information;
or the like, or, alternatively,
judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; and downloading to obtain the target file according to the second storage information.
To achieve the foregoing object, an embodiment of the present invention further provides a block chain-based file processing system, where the system includes:
the node management module is used for acquiring block link point information and constructing an adjacency list according to the block link point information;
the data transmission module is used for acquiring a query request and searching a target file in a block link point by combining the query request and the adjacency list;
the resource management module is used for judging whether the target file is stored in a single block chain node or not, and if so, returning first storage information of the target file; downloading the target file according to the first storage information; or, judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; downloading to obtain the target file according to the second storage information;
and the resource storage module is used for storing the target file and/or the file fragment.
To achieve the foregoing object, an embodiment of the present invention further provides a block chain-based file processing device, which includes a memory, a processor, a program stored in the memory and executable on the processor, and a data bus for implementing connection communication between the processor and the memory, where the program implements the steps of the foregoing method when executed by the processor.
To achieve the above object, the present invention provides a storage medium for a computer-readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to implement the steps of the aforementioned method.
Advantages and benefits of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention:
according to the file processing method, the file processing system, the file processing equipment and the file processing storage medium based on the block chain, firstly, an adjacency list is generated according to information of each node in the block chain, and the adjacency list is stored in all nodes of the block chain; after the resource query request is obtained, resource search is carried out in the block according to the node information recorded in the adjacency list, the search range of the target file can be effectively reduced through the node information recorded in the adjacency list, the occupation of computing resources caused by global search can be effectively reduced, the feedback speed of the target file is improved, and the processing efficiency is higher; in the process of downloading the target file, the scheme can directly download the target file from the nodes according to different storage modes of the target file in the block chain, or download a plurality of file fragments from a plurality of nodes and integrate the file fragments to obtain the target file, so that the task deduplication in the file downloading process is realized, the file downloading speed is improved, unnecessary copy and storage of file copies are reduced, the utilization rate of storage space resources is higher, and the utilization efficiency of resources such as channels and links of a distributed network is higher.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a block chain-based file processing method according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an implementation process of a block chain-based file processing method according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a block chain-based file processing system according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a file processing device based on a block chain according to an embodiment of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "part", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no peculiar meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
As described in the background section, in the related art, a CDN-based or blockchain-based data file distribution scheme or a distributed architecture has problems of excessive resource redundancy and slow response speed; in addition, when a distributed network or a system architecture is built in the related technology, network communication protocols are not uniform due to closing door vehicle building, the distributed network and the network and nodes of different networks are independent and cannot transmit and exchange data due to non-uniform protocols, and a large-scale general distributed network cannot be formed.
Based on the technical defects existing in the foregoing prior art solutions, the technical solution of the present application may be fused with a block chain technology through an ipfs (internet platform file system) protocol to form a file processing scheme based on a distributed content distribution network.
In the technical scheme of the application, the block chain is used as a shared database essentially, and the data or files stored in the shared database have the characteristics of being incapable of being forged, having trace in the whole process, being traceable, being publicly transparent, being maintained collectively and the like. Based on the characteristics, the blockchain technology lays a solid trust foundation and creates a reliable cooperation mechanism.
The inter-planet file System (IPFS) protocol is a media protocol based on the block chain technology, and changes point-to-point unicast into multipoint-to-multipoint (P2P) transmission by using distributed storage and content addressing. The goal of the IPFS protocol is to replace the traditional HTTP protocol, creating a more open, fast, secure internet.
On the basis of the blockchain and the IPFS protocol, as shown in fig. 1, an embodiment of the present invention provides a method for processing a file based on a blockchain, where the method mainly includes steps S100 to S300:
step S100: acquiring block chain link point information, and constructing and acquiring an adjacency list according to the block chain link point information;
in this embodiment, the block link point mainly undertakes operations of storing resource files, accessing, previewing, downloading and the like on the stored files according to specific instructions of a user; the node information of the blockchain acquired by the embodiment is information or data necessary for generating a new block or a new node of the blockchain, and the information or data includes, but is not limited to, an IP address, a real-time geographic location and identity information of the node, and necessary information for generating the blockchain block, such as a signature for judging the validity of the new block, an information digest for judging the validity of a file or a transaction in the new block, and a hash value. In the embodiment, the adjacency list is stored in the block link point and is used for recording the entering information list of other nodes, and the adjacency list also records the IP addresses and the real-time geographic positions of other nodes; in addition, the adjacency list can also record the link quality from each point to other points, such as round-trip delay between the nodes, packet loss rate and the like; and sorting or screening the chain link points of other blocks according to the link quality or the geographical position distance, and recording the chain link points in an adjacency list local to the node. According to the features of the IPFS protocol in the embodiment, the adjacency list in the embodiment may further record information of file resources stored in other blockchain nodes.
Specifically, in the embodiment, when a new blockchain node is started, the blockchain node broadcasts basic information of the node in the whole blockchain network, such as information of an IP address, a real-time geographic location, authentication and the like, and after other nodes in the blockchain network receive the broadcast information, the link quality of network communication with the new blockchain node, the actual location distance of the new blockchain node, and information of a resource file stored in the new blockchain node, such as a hash value or a message digest, are determined and recorded in an adjacency table in the local of the node.
It should be noted that, when a new transaction block is added to the blockchain through the mechanism of the IPFS protocol in the embodiment, for example, the transaction block of the target file is downloaded, the embodiment transfers the transaction block to all nodes of the blockchain network; other nodes may accept or reject the new block based on the block's legitimacy, signature, and transaction validity. When a block chaining point accepts a new transaction block, all nodes will store the transaction block and transfer and expand the transaction history to other nodes that may need to synchronize with the blockchain.
Step S200: acquiring a query request, and searching a target file in a block link point by combining the query request and an adjacency list;
in an embodiment, the query request is an instruction initiated by a user via a device of a certain blockchain node to search or query a target resource file, and after the instruction is initiated, the embodiment determines a block link point for storing the target file according to a storage address of the target file recorded in an adjacency table of a current node; and addressing the target file resource according to the information of other block chain nodes stored in the adjacency list so as to access the target file or the target resource in the query request, generating a new downloading task by the node according to the downloading instruction and recording the new downloading task in the block of the block chain according to the requirement, and downloading the file resource.
It can be understood that, in the embodiment, content distribution processing is implemented based on a blockchain network, according to characteristics of the blockchain, in the embodiment, a request for access downloading or the like initiated by each node generates a new block or a transaction block, broadcasts the new block or the transaction block in all nodes of the blockchain, verifies the validity of the new block or the transaction block by other blockchain nodes, and the verification process includes, but is not limited to, verifying a digital signature or an information digest of the new block or the transaction block, determines that the new block or the transaction block is valid, and adds the new block or the transaction block to an existing blockchain and stores the new block or the transaction block in each blockchain node.
Illustratively, based on the IPFS protocol of the embodiment, when the block link point in the embodiment uploads and stores the file resource to the local, a hash value may be generated according to the content of the file resource, and the hash value is recorded in the adjacency list of the other block link nodes in the block chain in a broadcast manner. After a node receives a query instruction of a target file, a transaction item for file query is newly established in a block chain, and after other nodes verify the validity of the transaction item and pass the verification, the transaction item is recorded in the block chain; in the process of searching the target file, indexing is carried out according to the hash value of the target file, firstly, the hash value of the target file is checked, whether the hash value of the file has a corresponding storage record or not is confirmed, if the storage record of the corresponding hash value exists, a block chain link point for storing the target file is determined according to the hash value, and the target file stored in the node is accessed.
Step S300: downloading to obtain a target file according to the storage information of the target file;
specifically, in the embodiment, before uploading, chaining or locally storing the files, the embodiment may classify the files that need to be uploaded, chained or locally stored according to a preset file classification manner, and adopt different storage manners for the files under different classifications; the file classification method includes, but is not limited to, classifying the file according to the size of the file, classifying the file according to the amount of computing power required to process the file transaction (e.g., rendering), or allocating corresponding file resources according to the maximum storage space or computing resources that each blockchain node can provide. According to different storage modes, in order to acquire the complete target file resource, the resource needs to be downloaded or integrated in different modes.
In an embodiment, step S300 may include steps S310 to S320, according to the size of the target file and the storage manner:
step S310: judging whether the target file is stored in a single block chain node or not, and if so, returning first storage information of the target file; downloading according to the first storage information to obtain a target file;
the first storage information of the target file refers to a location where the file is stored in the distributed system, and specifically in this embodiment, the first storage information refers to node information of a certain blockchain node where the target file is stored, where the node information is recorded in an adjacency list of nodes.
Exemplarily, when the file is classified according to the size of the file in the embodiment, 1MB is taken as a classification threshold, and if the file resource is determined not to be larger than 1MB by a classification algorithm preset locally by a node in the file resource storage process, the file resource is directly stored in a single block chain node storage space; according to the target file query instruction obtained directly or the target file query instruction sent by other blockchain nodes obtained in a broadcast mode, the node responds to the query instruction, and a data transmission link for accessing the target file is established according to a network communication protocol in the embodiment, wherein the network communication protocol includes but is not limited to an HTTP protocol and an IPFS protocol. When the target file needs to be downloaded, the transaction item downloaded by the target file is started according to the secondary instruction, such as a file downloading instruction, the target file is downloaded through the corresponding data transmission link, and the downloaded transaction item is recorded.
In addition, in the process of uploading the file, if the file resource is determined to be not more than 1MB, the file resource can be directly saved to the local, and the target file is directly called from the local storage space of the node according to the file query instruction or the file download instruction.
Step S320: judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; downloading according to the second storage information to obtain a target file;
specifically, different from the first storage information, in this embodiment, the second storage information refers to node information of a plurality of block chain nodes stored in a file fragment by performing fragment storage on a target file, and is also recorded in an adjacency table of each node of a block chain.
Exemplarily, when the classification is performed according to the size of a file in the embodiment, 1MB is used as a classification threshold, if it is determined that the file resource is greater than 1MB through a classification algorithm preset locally by a node in the file resource storage process, the file is stored, firstly, the large file is divided into a plurality of small parts through a special encryption algorithm, and file fragmentation is performed through data links between nodes for dispersed storage, so that fragmentation storage of the large file is realized, and block link points storing the file fragmentation are recorded into an adjacency table; if necessary, corresponding transaction items can be generated in the file fragmentation processing and storage processes, and are added as new blocks of the block chain and recorded in the block chain, so that malicious tampering is prevented, and the reliability of the file is ensured. In the process of performing fragmentation processing on a file, the embodiment may use the hash value of the file as an index basis for each file fragment. In the process of searching, accessing and downloading files, according to the obtained query request or download request and other instructions, the embodiment captures the nodes in the adjacency list of the nodes, wherein the target files are stored in the adjacency list, determines the information of the block chain nodes stored in each file fragment, establishes a data transmission link through a network communication protocol to download the file fragments of the target files, and finally, the local nodes are spliced into the complete file. The speed of parallel downloading can be far higher than the speed of directly downloading the complete file in the existing distributed scheme, so that the response speed is improved.
It should be noted that, in the embodiment, a fault tolerance mechanism may be further configured, and the file resources are copied to obtain a certain number of backups and stored in other nodes, so that even if the file resources stored in a certain node or some nodes are completely destroyed due to a special condition, the backups stored in other nodes may be completely restored, and the security coefficient of the files stored in the embodiment is improved.
In some optional embodiments, before the step S100 of obtaining the block link point information and constructing the adjacency list according to the block link point information, the method may further include steps S001 and S002:
step S001: when the block chain link point is on line for the first time, acquiring block chain link point information of the block chain link node;
step S002: broadcasting the block link point information in the block chain, and adding the broadcasted block link point into the block chain;
in an embodiment, the first time a block link point is on-line means that a device with data processing capability first joins a distributed network of block chains; specifically, in the embodiment, after the new node accesses the blockchain network, it first needs to establish a connection with other blockchain nodes according to a network communication protocol, for example, a data transmission link between the blockchain nodes is established by using a TCP protocol; the new node sends a message containing self-related information to other block chain nodes in a broadcasting mode to realize handshake communication; after the new node establishes the connection, the address database of the rich node is continuously expanded through the address broadcast in OKEx by the nodes of the existing connection. It will be appreciated that from the establishment of the connection, the new node is also performing synchronization of the blockchain blockinformation until the new node synchronizes all the blocks, and the node starts to perform functions such as distribution or verification of the blocks.
In some alternative embodiments, after the step of determining whether the target file is stored in a single blockchain node or the step of determining whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of blockchain nodes, the method may further include step S210:
step S210, if the target file is not stored or the file is fragmented in any block chain node, sending the query request to a source file library; acquiring a target file fed back by a source file library;
as shown in fig. 2, in the embodiment, the source file repository (SRC), which may also be called source repository, is a resource storage space distinguished from the block link point; specifically, after acquiring the query request at the block link point, and after confirming that no record of the target file in the query request exists in the adjacency list or no target file is obtained by searching the block link point or the target file is not fed back by the information stored in each block link point in the file fragmentation manner in step S200, the embodiment accesses the resource location outside the block link point, i.e., the source file library, according to the hash value or the message digest of the target file to acquire the target file resource in the query request. In the embodiment, the file resources that have been uploaded or stored in the blockchain node can be backed up in a source file library manner, so that the disaster tolerance capability of the embodiment is improved.
Because the embodiment of the application is a file processing method based on an IPFS protocol and a blockchain, and based on the characteristics of a distributed system of the IPFS protocol, the embodiment can be compatible with the current HTTP protocol based on URL addressing and the IPFS protocol based on content addressing, so that the current network and the blockchain network are in seamless transition; therefore, in some alternative embodiments, the process of downloading the target file may include steps S330 and S340:
step S330: generating a data transmission path of the target file according to the first storage information or the second storage information;
step S340: accessing the first storage information or the second storage information according to the data transmission path, and downloading to obtain a target file;
in an embodiment, the data transmission path includes an address addressing path and a content addressing path; more specifically, address addressing paths in embodiments include, but are not limited to, URL-based addressing, HTTP static server addressing, and the like. Taking URL addressing as an example, a Uniform Resource Locator (URL) is a character string used to describe information resources, and the URL may be used to describe various information resources in a uniform format, including files, addresses and directories of servers, and the like; in the embodiment, when a block chain node sends a query request to other block chain nodes to obtain a storage position of a target file, the other block chain nodes or a source file library feed back a URL link based on an HTTP (hyper text transport protocol), and the connection content comprises a protocol type, a domain name or an IP (Internet protocol), a port number, a path, a query character string and an anchor point; in URL link content, the domain name is bound with the IP, can visit through the domain name and can visit and visit to the position storing the target file resource through IP, IP is bound to the service again, users can request to the relevant service through the node IP which sends out the inquiry request; the path in the URL link content is for a link between two blockchain nodes that need to establish an access connection. After the block link point sending the query request obtains the URL link fed back by the other block links or the source repository, the storage location where the target file resource is stored may be accessed according to the URL link, so as to obtain the content of the target file.
In an embodiment, the content addressing path is a link or path for transmitting the file content with fingerprint identification information, where the fingerprint information is information for characterizing unique and unique characteristics of the file content, including but not limited to a hash value obtained by a hash algorithm or a message digest obtained by an encryption algorithm, etc.; since the cryptographic hash never changes, this means that content addressing can guarantee that the link always returns the same content. In embodiments where the hash function creates unique fingerprint information for each file, the chunk node may verify the integrity of the file by comparing the requested hash value to the received hash value, and if the hash values match, the file is known to have not been altered. In addition, the hash function can help eliminate duplication of the network, so that files with the same content do not need to be submitted twice, because the same content can generate the same hash, the storage requirement is further optimized, and the performance of the network is also improved. It should be noted that, in the embodiment, the content addressing link is permanent, and the link permanently points to the exact content.
In some alternative embodiments, the method further includes a step S350 of downloading the target file:
s350: carrying out protocol conversion on the data transmission path, and converting the address addressing path to obtain a content addressing path; downloading through a content addressing path to obtain a target file;
for example, in an embodiment, a protocol switching gateway may be set, where the gateway parses content of an address addressing path, such as a URL link, before a data link is completely established, extracts necessary target file storage information, generates fingerprint identification information such as a hash value or a message digest of the target file according to an IPFS protocol, and further constructs a content addressing path to be fed back to a block chain node that sends a query request. The content addressing path is more efficient, less costly, more secure and permanently preserved compared to the address addressing path.
In some alternative embodiments, after the step S200 of searching for the target file in the block link point in combination with the query request and the adjacency list, the method may further include steps S220 to S230:
step S220: recording link quality between block link nodes;
step S230: according to the link quality, the shortest access path reaching a target block link node is obtained through screening, and a target file or a file fragment is stored in the target block link node; accessing a target block chain node according to the shortest access path;
specifically, the adjacency list in the embodiment may also be used to record link quality between link points of each block, and the measurement criteria of the link quality include, but are not limited to, whether the nodes are directly connected, round-trip delay between the nodes, packet loss rate, and the like; in the process of searching the target file, the embodiment may determine the optimal path from the current node to the block link point storing the target file or the target file fragment through a shortest path algorithm, for example, dijkstra algorithm, that is, the shortest time-consuming access path, to access the target file or the target file fragment resource. It should be noted that, in the embodiment, the optimal, suboptimal, and suboptimal paths may be determined by a shortest path algorithm, and the current block link node may select a relatively high-quality path to access other block link nodes in combination with the congestion condition of the current network.
In some alternative embodiments, the downloading of the target file according to the second storage information in step S320 may include steps S321 to S322:
step S321: analyzing from the shortest access path to obtain the resource name and the identification information of the file fragment;
step S322: determining second storage information according to the resource name and the identification information, acquiring a plurality of file fragments according to the second storage information, and integrating the file fragments to obtain a target file;
it can be understood that, in the case of file fragment storage, the shortest access path determined by the embodiment also has the characteristics of a content addressing path; specifically, in the embodiment, after accessing the block link point storing the target file through the shortest access path determined in step S230, the target file may be downloaded by obtaining a secondary request instruction of the user, where the secondary instruction is an access path obtained through a previous query request, and resource names and fingerprint identification information of the target file are obtained through parsing from the access path, and the resource names and fingerprint identification information include, but are not limited to, hash values, message digests, and other contents; after the block chain link points storing the file fragments receive the secondary request instruction, after necessary verification is carried out, the file fragments are downloaded through the shortest access path between the block chain nodes, and finally the local block chain links are spliced into a complete file. The embodiment further improves the response speed and the downloading speed by the parallel and slicing downloading mode.
Referring to fig. 1, a specific application scenario is taken as an example to specifically describe a practical application of the block chain-based file processing method according to the technical solution of the present application.
For example, when a task of downloading a segment of movie video is started, a block chain node that needs to download the segment of movie video broadcasts basic information of the node in the whole block chain network, such as information of an IP address, a real-time geographic location, and identity authentication, and after receiving the broadcast information, other nodes in the block chain network determine link quality of network communication with the new block chain node, an actual location distance from the new block chain node, and information of a resource file stored in the new block chain node, such as a hash value or a message digest, and record the content in an adjacency list in the node local.
Then, based on the IPFS protocol of the embodiment, after the other nodes receive the query instruction of the movie video, a transaction item for file query is newly created in the blockchain, and after the other nodes verify the validity of the transaction item and pass the validity, the transaction item is recorded in the blockchain; in the movie video searching process, indexing is carried out according to the hash value of the movie video, the hash value of the movie video is checked at first, whether the hash value of the file has a corresponding storage record or not is confirmed, if the storage record of the corresponding hash value exists, a block link point for storing the movie video is determined according to the hash value, and the movie video stored in the node is accessed.
In addition, the embodiment can determine the optimal path from the current node to the block link point storing the movie video or the movie video fragment through a shortest path algorithm, such as dijkstra algorithm, namely, the shortest time-consuming access path to carry out the orientation of the movie video or the movie video fragment resource; after the determined shortest access path accesses the block link point stored with the movie video, the movie video can be downloaded by acquiring a secondary request instruction of a user; after the block chain link points storing the file fragments receive the secondary request instruction, after necessary verification is carried out, the file fragments are downloaded through the shortest access path between the block chain nodes, and finally the local block chain links are spliced into a complete file.
Those skilled in the art can understand that the embodiments or implementation manners of the present application can be extended to more application scenarios such as online resource management, information encryption transmission, and the like, and are not described herein again.
As shown in fig. 3, an embodiment of the present invention provides a block chain-based file processing system, which includes:
the node management module 300 is configured to obtain block link point information, and construct an adjacency list according to the block link point information;
the data transmission module 310 is configured to obtain a query request, and search for a target file in a block link point by combining the query request and an adjacency list;
the resource management module 320 is configured to determine whether the target file is stored in a single blockchain node, and if so, return first storage information of the target file; downloading according to the first storage information to obtain a target file; or, judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; downloading according to the second storage information to obtain a target file;
and the model application unit 330 is used for storing the target file and/or the file fragment.
Specifically, for example, when a task of downloading a 100G data set is started, a block link point needing to download the data set broadcasts basic information of the node in the whole block link system, and after receiving the broadcast information, other nodes in the block link network determine link quality of network communication with the new block link point, actual location distance from the new block link node, and information of a resource file stored in the new block link node, which are recorded in an adjacency table in the local of the node.
Then, based on the IPFS protocol of the embodiment system, after the other nodes receive the query instruction of the data set, a transaction item for file query is newly created in the block chain, and after the other nodes verify the validity of the transaction item and pass the validity, the transaction item is recorded in the block chain; in the process of searching the data set, indexing is carried out according to the hash value of the data set, firstly, the hash value of the data set is checked, whether the hash value of the data set has a corresponding storage record or not is confirmed, if the storage record of the corresponding hash value exists, a block chain link point for storing the data set is determined according to the hash value, and the data set stored in the node is accessed.
In addition, the embodiment can determine the optimal path from the current node to the link point of the block in which the data set or the data set fragment is stored through the shortest path algorithm, namely the direction of the data set or the data set fragment resource is performed through the shortest time-consuming access path; after the determined shortest access path accesses the block chain link point stored with the data set, downloading the data set by acquiring a secondary request instruction of a user; after the block chain nodes storing the file fragments receive the secondary request instruction, after necessary verification is carried out, the file fragments are downloaded through the shortest access path between the block chain nodes, and finally the local block chain nodes are spliced into a complete data set file.
In some optional embodiments, the embodiment system may further include a protocol adapter and a dynamic processing module, where the protocol adapter is configured to perform protocol conversion on a data transmission path in which the target file is downloaded, and convert an address addressing path to obtain a content addressing path; and downloading the target file through the content addressing path to obtain the target file. The dynamic processing module is used for recording the link quality between the block link nodes; according to the link quality, the shortest access path reaching a target block link node is obtained through screening, and a target file or a file fragment is stored in the target block link node; and accessing the first storage information or the second storage information according to the shortest access path.
In particular, the protocol adapter serves as a bridge between the old and new networks, and the embodiment system can realize the transition from HTTP to IPFS through an HTTP gateway. The user can switch to the IPFS protocol quickly to finish the storage, distribution and service of the Web network; the dynamic processing module can perform intelligent routing proxy to other block chain nodes or a source file library for dynamic acceleration.
In addition, the embodiment system may further include a refresh prefetching module, since the open-source IPFS system cannot delete a file, since the content is not compliant, the file needs to be deleted, and a refresh prefetching module needs to be added to delete or shield the file.
As shown in fig. 4, an embodiment of the present invention provides a task related data screening apparatus 400, where the apparatus 400 includes a memory 410, a processor 420, a program stored in the memory and operable on the processor, and a data bus 430 for implementing connection communication between the processor 410 and the memory 420, and when the program is executed by the processor, the following specific steps are implemented as shown in fig. 1:
step S100: acquiring block chain link point information, and constructing and acquiring an adjacency list according to the block chain link point information;
specifically, when a block chain node supporting the IPFS protocol is online for the first time, the block chain node broadcasts basic information outwards to join the block chain network, and other nodes record the information of the block chain node in an adjacency list conveniently.
Step S200: acquiring a query request, and searching a target file in a block link point by combining the query request and an adjacency list;
specifically, after the query request is initiated, the embodiment determines the block link point storing the target file according to the storage address of the target file recorded in the adjacency table of the current node.
Step S300: downloading to obtain a target file according to the storage information of the target file;
specifically, according to the obtained instructions such as the query request or the download request, the embodiment captures the nodes in the adjacency list of the nodes, in which the target file is stored, determines the information of the block chain nodes stored in each file fragment, establishes a data transmission link through a network communication protocol to download the file fragments of the target file, and finally splices the local nodes into a complete file.
Embodiments of the present invention also provide a computer-readable storage medium, where one or more programs are stored, and the one or more programs are executable by one or more processors to implement the following specific steps as shown in fig. 1:
s100: acquiring block chain link point information, and constructing and acquiring an adjacency list according to the block chain link point information;
s200: acquiring a query request, and searching a target file in a block link point by combining the query request and an adjacency list;
s300: judging whether the target file is stored in a single block chain node or not, and if so, returning first storage information of the target file; downloading according to the first storage information to obtain a target file; or, judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; downloading according to the second storage information to obtain a target file;
specifically, for example, in a task of downloading a database file, when a block link point that needs to download the database is started, the block link point broadcasts basic information of the node in the whole block chain system, and after receiving the broadcast information, other nodes in the block chain network determine link quality of network communication with the new block link point, actual location distance from the new block chain node, and information of a resource file stored in the new block chain node, which are recorded in an adjacency table in the node local.
Then, based on the IPFS protocol of the embodiment system, after other nodes receive a query instruction of the database, a transaction item for file query is newly created in the block chain, and after the other nodes verify the validity of the transaction item and pass the validity, the transaction item is recorded in the block chain; in the process of searching the database, indexing is carried out according to the hash value of the database, firstly, the hash value of the database is checked, whether the hash value of the database has a corresponding storage record or not is confirmed, if the storage record of the corresponding hash value exists, a block link point for storing the database is determined according to the hash value, and the database stored in the node is accessed.
In addition, the embodiment can determine the optimal path from the current node to the block link point storing the database or the database fragment through the shortest path algorithm, namely the shortest time-consuming access path to carry out the orientation of the database or the database fragment resource; after the determined shortest access path accesses the block link point stored with the database, the database can be downloaded by acquiring a secondary request instruction of a user; after the block chain link points storing the file fragments receive the secondary request instruction, after necessary verification is carried out, the file fragments are downloaded through the shortest access path between the block chain nodes, and finally the local block chain links are spliced into a complete database file.
Those skilled in the art can understand that the embodiments or implementation manners of the present application can be extended to more application scenarios such as online resource management, information encryption transmission, and the like, and are not described herein again.
In summary, the block chain-based file processing method, the computer device, and the storage medium provided in the embodiments of the present application
Compared with the existing distributed file distribution technical scheme, the technical scheme of the application has the following advantages or advantages:
1) according to the technical scheme, the adjacency list is generated according to the node information in the block chain, after the resource query request is obtained, resource search is conducted in the block according to the node information recorded in the adjacency list, the search range of the target file can be effectively reduced through the node information recorded in the adjacency list, occupation of computing resources caused by global search can be effectively reduced, the feedback speed of the target file is improved, and the processing efficiency is higher.
2) According to the method and the device for downloading the target file, in the process of downloading the target file, the target file can be directly downloaded from the nodes according to different storage modes of the target file in the block chain, or a plurality of file fragments are downloaded from a plurality of nodes and then the target file is obtained through file fragment integration, so that task deduplication in the process of downloading the file is achieved, the file downloading speed is improved, unnecessary copy storage of file copies is reduced, the utilization rate of storage space resources is high, and the utilization efficiency of resources such as channels and links of a distributed network is also high.
The embodiment of the application can acquire and process related data based on an artificial intelligence technology. Among them, Artificial Intelligence (AI) is a theory, method, technique and application system that simulates, extends and expands human Intelligence using a digital computer or a machine controlled by a digital computer, senses the environment, acquires knowledge and uses the knowledge to obtain the best result. The artificial intelligence infrastructure generally includes technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, big data processing technologies, operation/interaction systems, mechatronics, and the like. While artificial intelligence software techniques may include, but are not limited to: computer vision techniques, robotics, biometric recognition techniques, speech processing techniques, natural language processing techniques, and machine learning/deep learning.
Moreover, the application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like. The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flow charts of the present invention are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
It should be understood that, unless indicated to the contrary, one or more of the functions and/or features may be integrated in a single physical device and/or software module or one or more of the functions and/or features may be implemented in a separate physical device or software module. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary for an understanding of the present invention. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the invention as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the invention, which is defined by the appended claims and their full scope of equivalents.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or terminal, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or terminal and execute the instructions.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. File processing method based on block chain, characterized in that the method comprises the following steps:
acquiring block chain link point information, and constructing and acquiring an adjacency list according to the block chain link point information;
acquiring a query request, and searching a target file in a block link point by combining the query request and the adjacency list;
judging whether the target file is stored in a single block chain node or not, if so, returning first storage information of the target file; downloading to obtain the target file according to the first storage information;
or the like, or, alternatively,
judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; and downloading to obtain the target file according to the second storage information.
2. The blockchain-based file processing method according to claim 1, wherein after the step of determining whether the target file is stored in a single blockchain node or after the step of determining whether the target file includes a number of file fragments and the file fragments are stored in a number of the blockchain nodes, the method further comprises:
if the target file or the file fragment is not stored in any block chain node, sending the query request to a source file library;
and acquiring the target file fed back by the source file library.
3. The block chain-based file processing method according to claim 1, wherein before the step of obtaining block link point information and constructing an adjacency list according to the block link point information, the method further comprises:
when the block chain node is on line for the first time, acquiring the information of the block chain node;
and broadcasting the information of the block chain link points in the block chain, and adding the block chain nodes into a block chain network after broadcasting.
4. The block chain-based file processing method according to claim 1, wherein the downloading to obtain the target file comprises the following steps:
generating a data transmission path of the target file according to the first storage information or the second storage information; the data transmission path comprises an address addressing path and a content addressing path;
and accessing the first storage information or the second storage information according to the address addressing path or the content addressing path, and downloading to obtain the target file.
5. The blockchain-based file processing method according to claim 4, wherein the downloading obtains the target file, further comprising the steps of:
performing protocol conversion on the data transmission path, and converting the address addressing path to obtain the content addressing path;
and downloading the target file through the content addressing path to obtain the target file.
6. The blockchain-based file processing method according to any one of claims 1 to 5, wherein after the step of performing a target file search in a blockchain link point in combination with the query request and the adjacency list, the method comprises:
recording the link quality between the block link nodes;
screening to obtain the shortest access path reaching the target block link node according to the link quality;
and accessing the target block chain node according to the shortest access path.
7. The method according to claim 6, wherein the step of downloading the target file according to the second storage information comprises:
analyzing the shortest access path to obtain the resource name and the identification information of the file fragment;
and determining the second storage information according to the resource name and the identification information, acquiring a plurality of file fragments according to the second storage information, and integrating the file fragments to obtain the target file.
8. A blockchain-based file processing system, comprising:
the node management module is used for acquiring block link point information and constructing an adjacency list according to the block link point information;
the data transmission module is used for acquiring a query request and searching a target file in a block link point by combining the query request and the adjacency list;
the resource management module is used for judging whether the target file is stored in a single block chain node or not, and if so, returning first storage information of the target file; downloading the target file according to the first storage information; or, judging whether the target file comprises a plurality of file fragments and the file fragments are stored in a plurality of block chain nodes, if so, returning second storage information of the file fragments; downloading to obtain the target file according to the second storage information;
and the resource storage module is used for storing the target file and/or the file fragment.
9. The blockchain-based file processing system of claim 8, wherein the system further includes a protocol adapter;
the protocol adapter is used for carrying out protocol conversion on the data transmission path of the target file obtained by downloading and converting the address addressing path to obtain a content addressing path; and downloading the target file through the content addressing path to obtain the target file.
10. The blockchain-based file processing system according to claim 8 or 9, wherein the system further includes a dynamic processing module;
the dynamic processing module is used for recording the link quality between the block link points; screening to obtain the shortest access path reaching the target block link node according to the link quality; and accessing the first storage information or the second storage information according to the shortest access path.
11. Blockchain based file processing device, characterized in that the device comprises a memory, a processor, a program stored on the memory and executable on the processor, and a data bus for enabling a connection communication between the processor and the memory, which program, when executed by the processor, implements a blockchain based file processing method according to any of claims 1 to 7.
12. A storage medium for computer-readable storage, wherein the storage medium stores one or more programs which are executable by one or more processors to implement the block chain based file processing method of any one of claims 1 to 7.
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